Drug interactions
Palbociclib + Stiripentol
Severity: Moderate
Palbociclib and Stiripentol: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Stiripentol both inhibits and induces CYP3A4, so palbociclib exposure may change unpredictably. Either increased toxicity such as neutropenia or reduced efficacy is possible.
What this interaction means in plain words
Palbociclib and Stiripentol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Palbociclib belongs to Oncology; Stiripentol belongs to Central Nervous System.
Why it happens
Stiripentol has mixed CYP3A4 inhibitory and inducing effects that alter palbociclib metabolism.
What to do
Monitor blood counts and tumor response, and adjust the palbociclib dose according to tolerability.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Palbociclib
Other interactions of Stiripentol
Frequently asked questions
Can I take Palbociclib with Stiripentol?
MediHelp rates the interaction as moderate. Palbociclib and Stiripentol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Stiripentol both inhibits and induces CYP3A4, so palbociclib exposure may change unpredictably. Either increased toxicity such as neutropenia or reduced efficacy is possible.
How serious is the interaction between Palbociclib and Stiripentol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood counts and tumor response, and adjust the palbociclib dose according to tolerability.
What other medicines interact with Palbociclib?
MediHelp also lists interactions of Palbociclib with, for example, Apalutamide, Atazanavir, Carbamazepine. The full list is on the Palbociclib page.
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